Piccardi
{{PatentInfo |Inventor=William A. Staff |Assignee=William A. Staff |Country=US |ApplicationNum=650174 |ApplicationDate=1933-01-04 |PatentNum=1931138 |PatentDate=1933-10-17 |PriorityDate=1933-01-04 |Titolo=Adjustable pencil holder |Marca=Unbranded |Desc...